MESON Chess Problem Database

Problem Display
PID: 241864 (8/8/5p2/1R3K2/3k4/3p4/3Q4/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1931

8/8/5p2/1R3K2/3k4/3p4/3Q4/8

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb4#
  • Tries
    • 1.Kg4?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke4
        • 2.Qf4#
      • 1...f5+!
    • 1.Kxf6?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke4!
    • 1.Qe1?
      • 1...Kc4
        • 2.Qb4#
      • 1...d2!
    • 1.Qb2+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke3!
    • 1.Qf2+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kc3!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);CHECK
    • Try
      • K(C);P-FLIGHT,XP(c)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR2(A)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
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